func (self *Texture) setupParams() {
self.tex.Bind(gl.TEXTURE_2D)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
if self.Setup.Mipmaps {
gl.GenerateMipmap(gl.TEXTURE_2D)
}
switch self.Setup.Filtering {
case NEAREST:
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
break
case LINEAR:
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
break
case TRILINEAR:
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR_MIPMAP_LINEAR)
break
}
gl.BindTexture(gl.TEXTURE_2D, 0)
}
func RenderTexturedRect(cam *Camera, m *v.Matrix4, sizeX, sizeY float32, t *Texture) {
cam.LoadProjection()
cam.LoadModelview(m)
gl.Enable(gl.TEXTURE_2D)
t.tex.Bind(gl.TEXTURE_2D)
gl.Color4ub(255, 255, 255, 255)
gl.Begin(gl.QUADS)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-sizeX, -sizeY, 0)
gl.TexCoord2f(1, 1)
gl.Vertex3f(sizeX, -sizeY, 0)
gl.TexCoord2f(1, 0)
gl.Vertex3f(sizeX, sizeY, 0)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-sizeX, sizeY, 0)
gl.End()
gl.Disable(gl.TEXTURE_2D)
gl.BindTexture(gl.TEXTURE_2D, 0)
}
func (self *Texture) LoadData(data []uint8) {
self.tex.Bind(gl.TEXTURE_2D)
if data == nil {
gl.TexImage2D(gl.TEXTURE_2D, 0, self.Setup.InternalFormat,
self.Width, self.Height, 0, self.Setup.Format,
gl.UNSIGNED_BYTE,
nil)
} else {
gl.TexImage2D(gl.TEXTURE_2D, 0, self.Setup.InternalFormat,
self.Width, self.Height, 0, self.Setup.Format,
gl.UNSIGNED_BYTE,
data)
}
gl.BindTexture(gl.TEXTURE_2D, 0)
}
func (self *Texture) Unbind(i int) {
gl.ActiveTexture(gl.GLenum(gl.TEXTURE0 + i))
gl.BindTexture(gl.TEXTURE_2D, 0)
}